Creating form with api calls.

Ok, I have some code that will create a form, listbox, and two buttons. I want to be able to upon pressing the OK button the data selected in the listbox must be returned. In the long run, I want this whole thing to work like an msgbox or inputbox, but will use an listbox instead. As of right now, I cannot get the buttons to work. Could you guys take a peek and see what I am doing wrong. Also, do you have any code that will allow me to get the selected data out of the listbox.

Thanks.

I have attached to module.

Your code looks like Charles Petzold playing VB.

Don't subclass the buttons - you've already got the GetMessage function. Test for mouse button activity in there. Just put a bunch of case statements to trap what you need by hWnd of the window (buttons) of interest

Send WM_GETTEXT to the listbox to return the text. The text has to be returned in a Property statement to the client.

I don't see any interface definitions or Implements or whatever.
You need those, as I assume you know.

If I may ask, who is Charles Petzold? I am not sure of a good way to do this because the only examples I have found always seem to come from the api guide which I already have. I want to learn how to do this not just be able to copy and paste code; so, if anyone has a good site or book to learn how to use apis, then let me know. I will work on your suggestion because I feel like there should be an easier way than what I am current doing. If you or anyone has any code that could aid in learning how to do this, please post it.

Charles Petzold is one of the designers of Windows 16 bit & 32 bit.

He has several books on programming Windows. Basically, what you are doing is better off done in C. The reason is that a lot of api's you will need are inaccessible from VB. As I understand it, VB.NET gets around those restrictions, so hang in there.
Most windows internals books are C-based, as are Petzold's.

Suggestions:

www.mvps.org --- there is a lot of material at several MVP sites

www.mvps.org/vb/hardcore ---
online copy of Hardcore Visual Basic - a must.

Visual Basic Bible - covers a lot of what you are doing. Monstrous tome.

Search the vbforum here for: subclassing

And since Hardcore is a freebie, you really should consider downloading and reading it. It will get you past a lot of problems you are now having.

When I have some time, I'll get your code going, but I don't have VB on this machine, just C. From the tone of your reply, I'd guess that you really did just cut and paste. Please read Hardcore.

Thanks. At the time of my post I was still trying to figure out what was even going on and was hoping I could get some help understanding it.

could I write this in C and use it in VB?

C++ -- Of course, as long as you provide a COM interface for the control.